Placement on trees: Place Synergy Shield Verbenone bubbles on north face of susceptible trees by stapling individual bubbles at 6 to 12 feet high. Attach to tree using flashing on device being careful not to puncture the reservoir.

Individual trees and area 1 acre / 0.4 hectare or less:

• Place 2-6 Synergy Shield Verbenone bubbles on each tree depending on risk of attack and size of tree.
• For large trees over 24 inches / 61 cm diameter, add 1 more Synergy Shield Verbenone bubbles for each additional 6 inches /15.2 cm in diameter, 3 feet / 1 meter above the previous Synergy Shield Verbenone bubble.

Perimeter Protection:

• On contour of perimeter, place 1 to 4 Synergy Shield Verbenone bubbles on each susceptible tree, depending on size. Continue placing Synergy Shield Verbenone bubbles on susceptible trees to a depth of 45 – 120 feet / 13.7 – 36.6 meter from the perimeter.

Forested stands over 1 acres / 0.4 hectare:

• Minimum dose, 120 Synergy Shield Verbenone bubbles /acre or 296 per hectare. At low beetle pressure place 1 Synergy Shield Verbenone bubble /tree in a grid pattern. Maximum dose, 410 Synergy Shield Verbenone bubbles /acre or 1013 per hectare.
• At high beetle pressure place 1-2 Synergy Shield Verbenone bubbles per susceptible tree.